Kelp Thrive With Their Attack and Defense Techniques
In Kelp Thrive With Their Attack and Defense Techniques, narrator Sir David Attenborough witnesses the attack and defense techniques of unusual marine creatures. Sea urchins gang up on kelp, a starfish uses its feet to taste prey, and sand dollars cluster together to avoid being liquefied! This video is excerpted from BBC's Planet Earth, a breathtaking documentary series that highlights the natural wonders of our planet.
Lesson Express
Q: What are some attack techniques you saw in the video?
A: Sea urchins gang up and use their five teeth to chew tough kelp; the sunflower starfish uses its feet to taste prey and it extrudes its stomach and wraps it around its prey.
Q: What are some defense techniques you saw in the video?
A: Brittle starfish skitter away from the predator; sand dollars cluster together.
Q: What do you think of the underwater drama going on in the kelp forest?
A: Student responses will vary.
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